source: frontend/node_modules/webpack/lib/dependencies/WebpackIsIncludedDependency.js

/*
        MIT License http://www.opensource.org/licenses/mit-license.php
        Author Ivan Kopeykin @vankop
*/

"use strict";

const Dependency = require("../Dependency");
const Template = require("../Template");
const makeSerializable = require("../util/makeSerializable");
const ModuleDependency = require("./ModuleDependency");

/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
/** @typedef {import("../Dependency").ReferencedExports} ReferencedExports */
/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
/** @typedef {import("../ModuleGraph")} ModuleGraph */
/** @typedef {import("../javascript/JavascriptParser").Range} Range */
/** @typedef {import("../util/runtime").RuntimeSpec} RuntimeSpec */

class WebpackIsIncludedDependency extends ModuleDependency {
        /**
         * Creates an instance of WebpackIsIncludedDependency.
         * @param {string} request the request string
         * @param {Range} range location in source code
         */
        constructor(request, range) {
                super(request);

                this.weak = true;
                this.range = range;
        }

        /**
         * Returns list of exports referenced by this dependency
         * @param {ModuleGraph} moduleGraph module graph
         * @param {RuntimeSpec} runtime the runtime for which the module is analysed
         * @returns {ReferencedExports} referenced exports
         */
        getReferencedExports(moduleGraph, runtime) {
                // This doesn't use any export
                return Dependency.NO_EXPORTS_REFERENCED;
        }

        get type() {
                return "__webpack_is_included__";
        }
}

makeSerializable(
        WebpackIsIncludedDependency,
        "webpack/lib/dependencies/WebpackIsIncludedDependency"
);

WebpackIsIncludedDependency.Template = class WebpackIsIncludedDependencyTemplate extends (
        ModuleDependency.Template
) {
        /**
         * Applies the plugin by registering its hooks on the compiler.
         * @param {Dependency} dependency the dependency for which the template should be applied
         * @param {ReplaceSource} source the current replace source which can be modified
         * @param {DependencyTemplateContext} templateContext the context object
         * @returns {void}
         */
        apply(dependency, source, { runtimeTemplate, chunkGraph, moduleGraph }) {
                const dep = /** @type {WebpackIsIncludedDependency} */ (dependency);
                const connection = moduleGraph.getConnection(dep);
                const included = connection
                        ? chunkGraph.getNumberOfModuleChunks(connection.module) > 0
                        : false;
                const comment = runtimeTemplate.outputOptions.pathinfo
                        ? Template.toComment(
                                        `__webpack_is_included__ ${runtimeTemplate.requestShortener.shorten(
                                                dep.request
                                        )}`
                                )
                        : "";

                source.replace(
                        dep.range[0],
                        dep.range[1] - 1,
                        `${comment}${JSON.stringify(included)}`
                );
        }
};

module.exports = WebpackIsIncludedDependency;